Possibly true. But the direct exchange of money for a product or service creates a salutory incentive structure. And unfortunately, the rise of open source has been associated with the rise of indirect monetization models that aren't as beneficial, especially in the consumer space.
Painting this as an unintended consequence of open source is really interesting. The rise of free open source alternatives to proprietary products has encouraged companies to provide products free, but these companies aren't going to be motivated to provide these products without some avenue for profit.